<!DOCTYPE html>
<html lang="en">
<head><!-- 头 -->
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body><!-- 主体 -->


    <table border="1px">
        <caption>表格1</caption>
        <tr>  <td>1-1</td>   <td>1-2</td>  <td>1-3</td>  <td>1-4</td>              </tr>
        <tr>  <td colspan="2">2-1</td>     <td>2-3</td>  <td rowspan="3">2-4</td>   </tr>
        <tr>  <td>3-1</td>   <td>3-2</td>  <td>3-3</td>                             </tr>
        <tr>  <td>4-1</td>   <td>4-2</td>  <td>4-3</td>                          </tr>
    </table>

</body>
</html>